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CONFIG_MODVERSIONS: Module versioning support

General informations

The Linux kernel configuration item CONFIG_MODVERSIONS has multiple definitions:

Module versioning support found in init/Kconfig

The configuration item CONFIG_MODVERSIONS:

Help text

Usually, you have to use modules compiled with your kernel. Saying Y here makes it sometimes possible to use modules compiled for different kernels, by adding enough information to the modules to (hopefully) spot any changes which would make them incompatible with the kernel you are running. If unsure, say N.

Module versioning support (EXPERIMENTAL) found in init/Kconfig

The configuration item CONFIG_MODVERSIONS:

Help text

Usually, you have to use modules compiled with your kernel. Saying Y here makes it sometimes possible to use modules compiled for different kernels, by adding enough information to the modules to (hopefully) spot any changes which would make them incompatible with the kernel you are running. If unsure, say N.

Set version information on all module symbols found in init/Kconfig

The configuration item CONFIG_MODVERSIONS:

Help text

Usually, modules have to be recompiled whenever you switch to a new kernel. Saying Y here makes it possible, and safe, to use the same modules even after compiling a new kernel; this requires the program modprobe. All the software needed for module support is in the modutils package (check the file Documentation/Changes for location and latest version). NOTE: if you say Y here but don't have the program genksyms (which is also contained in the above mentioned modutils package), then the building of your kernel will fail. If you are going to use modules that are generated from non-kernel sources, you would benefit from this option. Otherwise it's not that important. So, N ought to be a safe bet.

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